6, Oi-670, Oi-machi, Iruma-gun Saitama 356-0053, Japan Phone : 492-67-0911

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6, Oi-670, Oi-machi, Iruma-gun Saitama 356-0053, Japan Phone : 492-67-0911 Fax : 492-69-0691, 492-69-0692 2186 Bering Drive San Jose, CA., 95131, USA Phone : 408-428-9654 Fax : 408-428-0472 Toll free : 800-832-0060 JAPAN               98.04.1,500 Printed in Japan 10X Eyepiece, High-eyepoint, Widefield Focusing Cross-line Eyepiece, 10X MAINTENANCE AND CARE Photo Tube BULB REPLACEMENT MODEL 9300: Trinocular Body MODEL 9200: Binocular Body MODEL 9100: Monocular Body Rotatable 360ﾟ/30ﾟ Inclination Beam-splitter Lever Analyzer Slider Bertrand Lens/Aperture Ball-bearing Objective Nosepiece with Objective Mounts Compensator Slot Strain Free Objectives Microscope Limb When changing light bulbs in the illuminators, always disconnect the plug from the electrical source, and make it sure that the green monitor light is off. Never work on the electrical system without first disconnecting. The bulb is held in a socket block inserted in the rear of the microscope base. (1) Remove the socket block from the microscope base by unscrewing the two screws and pulling the backing plate clear of the instrument. (2) After making certain the old bulb is cool to the touch, remove it by pulling straight out of its socket. Do not twist as the lamp pins may break off and become lodged in the socket. (3) Handle the new bulb only with tissue paper or the plastic in which it is wrapped and insert the two pins into the two holes in the socket. DO NOT HANDLE WITH BARE FINGERS - BULB MAY EXPLODE WHEN HEATED IF NOT HANDLED CORRECTLY. Rotatable Stage with Clamp, Reading to 1ﾟ Rotation Tension Control Knob Substage Condenser Achromatic N.A.1.25 Coarse Focus Knob Light Intensity Control Knob Fine Focus Knob Rotatable Swing-out Polarizer Substage Focus Control CLEANING Field Iris Adjustment Ring Clean exposed lens surfaces carefully with a pressurized air source, soft brush or clean soft cloth. Too much finger pressure may damage lens coatings. CARE Always cover the instrument with plastic dust cover provided when the microscope is not in use. Keep eyepieces in the microscope body at all times in order to prevent dust from falling on the internal optics. Store the microscope in a safe, clean place when not in use for an extended period of time. Koehler Type Illuminator with 6V 30W Halogen Lamp To remove oil, fingerprints and grease smudges, moisten the cleaning cloth with a very small amount of alcohol or xylene. Immersion oil should always be promptly cleaned from high power oil immersion objectives after every use. Microscope Base with Built-in Transformer Painted or plastic surfaces should be cleaned only with a cloth moistened with water and a small amount of detergent. MODEL ML9300 [TRINOCULAR MODEL] 1 First Order Red Compensating Plate 1/4 Wave-Length Test Plate DO NOT ATTEMPT TO MAKE ADJUSTMENTS TO THE INTERNAL OPTICS OR MECHANICS!! If the microscope does not seem to be functioning properly or you have questions about its operation, call your supplier (or an authorized repair service) for advice. 10 PHOTOGRAPHY AND TELEVISION UNPACKING, ASSEMBLY, PREPARATION FOR USE PHOTOGRAPHY UNPACKING Photographic documentation of microscope visual images is most conveniently achieved by using the trinocular (photo-binocular) bodies for use with 35mm SLR Camera or PMX100 Large Format Camera. All MEIJI TECHNO microscopes are usually supplied in an expanded polystyrene, 2-part case and this should be used for storage, possible transport in the future, etc. If your order includes a wooden storage cabinet, release the fixing screws holding the limb and base from the cabinet and withdraw. In the case of the ML series of biological, metallurgical and polarizing microscopes a trinocular body is equipped with a sliding switch-over beam-splitter component which either (1) allows all of the light to go to the visual eyepieces or (2) directs 80% of the image-forming light upwards to the film plane of a 35mm SLR camera, while still sending 20% of the light to the binocular eyepieces. In the system the MA150/50 or MA150/60 Camera Attachment should be used with the SLR camera of your choice. Please note that one of the large range of T2 Adapter Rings suiting to your camera should be ordered separately. These adaptor rings are intended to compensate for the small differences in effective distance of the film plane in your camera - so as to ensure that photographs are optimally sharp, and achieved without wastage of film in trial shots and experimentation. Unpack the microscope and its parts carefully. Do not throw away any boxes or packing materials until the contents of the shipping container have been checked against your order and the packing list sent. ASSEMBLY The binocular or trinocular body which is stored separately should now be mounted on the limb and clamped, when it is squared with the base. It is important that the body be oriented correctly on the microscope limb. Make sure, therefore, that the point of the Clamp screw gets fit to the Slot milled on the bottom face of the body. In addition special low-power camera eyepieces (2.5X, 3.3X and 5X) are available and recommended these will give you maximum field coverage on your specimen while using the convenient and economical 35mm film format. Slot CAMERA OPERATION (1) Fix your 35mm SLR camera, T2 Adapter and a photo (camera) eyepiece on the MA150/50 or MA150/60 Camera Attachment, then mounting this assembly on the straight tube of the trinocular body. Cone fitting [Adverse side of body] (2) Pull out the lever on your trinocular body so as to send the image both to the camera and the visual eyepieces. To mount the body, loosen the Clamp screw and insert the Cone fitting in the top of the limb and clamp it by the clamp screw. (3) Rotate the adjustment ring on the straight tube so as to set correctly for optimum conditions of simultaneous visual observation and photography. Place the microscope and parts on a sturdy table or desk which gives firm and stable support. This should be located where the atmosphere is as clean as possible, avoiding the places where there is excessive dust, moisture, heat or fumes. TELEVISION For television the MA151/10 C Mount should be used, threaded into your TV camera, then placed and adjusted on straight tube of your trinocular body. Adjustment can then proceed as per paragraph (3) above. You should understand that the comparatively large magnification factors inherent in most TV camera/monitor systems will restrict your field of view (while blowing up total magnification). A correct optical set-up and adjustment is, of course, crucial to obtaining a good TV monitor image, but keep in mind that the monitor controls for brightness and contrast adjustment are also important and should also be experimented with in order to obtain the best monitor image. 9 Clamp screw of the body into the recess When in place insert eyepieces in the eyetubes of the binocular body and mount the objectives on the centering objective nosepiece, starting with the lowest magnification, but positioning the 10X in the fixed (not centerable) opening. Then position the others to the right in order of increasing magnification. A focusable cross-line eyepiece should be used in the slotted eyetube. Make sure that it is Keyed into the slot in the eyetube, as its orientation is important and should not change. The cross-line should be sharply focused by turning the focusing ring. IMPORTANT! Before plugging the illuminator into any electric outlet, make sure that transformers and illumination bases supplied to you are suitable to the current available. (See voltage indication at the bottom of limb.) 2 OPERATING INSTRUCTIONS The centering can be carried out with the Hexagon keys OPTICAL SET-UP AND ILLUMINATION (1) Turn on the illuminator. Place the specimen slide you wish to examine on the microscope stage and rotate the 10X objective into position for focus. (2) Move the substage condenser up to its top position, using the Rack and pinion focusing control Check to make sure that both the Field iris and the Aperture iris are fully open. . supplied in the following way: (1) Focus down on your specimen through the 10X objective mounted in the non-centerable locked-up opening, aside from the other floating centerable nosepiece holes, and memorize the point of the specimen appearing just on the eyepiece cross-line center. (2) Turn the nosepiece and bring the next higher power objective to the position, and focus on the specimen if necessary, and see whether the pinpoint of the specimen you memorized before is located just at the cross point of the mark. (3) In case the memorized pinpoint is seen away from the cross point, it must be brought to the cross point by the use of the provided two Centering Screws, which can be inserted into the key holes on the nosepiece ring and turned to move the pinpoint to the cross point. Rack and pinion focusing control for substage condenser Aperture iris control lever Hexagon keys Switch and intensity control knob Field iris control Hexagon keys (3) Focus down on your specimen slide until detail can be seen. Adjust the brightness of the in-base light source, using the Intensity control knob , left-hand back on the base. BINOCULAR ADJUSTMENT COMMENT: Using a binocular body is much more efficient and less tiring than monocular bodies, but it must be adjusted correctly. When it is perfectly adjusted the images coming from the two eyepieces are fused into one better image in eyes of the observer. Fused This picture shows that the Hexagon key inserted into the key hole on the nosepiece. NOTE: It is important that you change magnifications by rotating the milled nosepiece ring, not by grasping and pulling the objective barrels. Doing this puts strain on the objective housings which can cause some decentering. BERTRAND LENS The ML9000 series polarizing microscope features an in-tube, slide-in Bertrand Lens. Fitted with it is a field-limiting aperture which allows isolation of small features in the center of the field. Thus the characteristic interference figures for small crystalline elements can be observed and studies. These effects only occur when both analyzer and polarizer are in the optical path, the polarizer being set at 0 degrees. The in-tube design of the Bertrand Lens makes it possible to use it equally well with binocular, trinocular and monocular bodies. COMPENSATORS A sensitive tint plate (first order red) and mica 1/4 wave plate are supplied with the ML9000 series polarizing microscope as standard. These are fitted in plates with standard DIN dimensions, sliding in a slot cut in the tube just above the objective nosepiece. 3 8 SPECIAL POLARIZING FACILITIES Please note that the applications and detailed techniques of polarizing microscopy are beyond the scope of this manual. What follows is a description of the special features of the ML9000 Series Polarizing Microscope which are often used in geological, mineralogical, chemical and other optical studies which have long been associated with the polarizing microscope. SUBSTAGE POLARIZER After you have focused on the specimen proceed as follows:(1) Move the sliders on which the two binocular eyepiece tubes are mounted in and out until the distance between them is exactly the same as the distance between the pupils of the observers eyes. (This is the interpupillary distance .) (2) When this is done note the dimension which is displayed in the Window of the slider. Always remember to set to this distance when using the microscope. It will be different for different observers, so they will have to check the best setting for themselves. This is fully rotatable with a swing-out, click-in mount. When the polarizer is swung out, the light is not polarized. Window When it is swung into the path and clicked into its correct position, the polarizer may be rotated, sending polarized light within angles from 0-360 degrees up to the specimens. Angular settings for 0 degrees and 90 degrees are marked and clicked on the mounting so that these common settings can be located quickly and precisely. Substage Polarizer (The picture shows that substage polarizer is swung out.) (3) Now use the fine focus to get a sharp image in the right-side eyepiece using your right eye. SLIDE-IN ANALYZER This is mounted in an in-tube slider which moves the analyzer in and out of the optical path. When in , and with the substage polarizer also in and set at 0 degrees, these elements are said to be crossed and the field of view is said to be extinguished . In this condition the field of view is dark except for optically active elements in the field, which rotate the angle of polarization and thus become visible against a dark background. This is the basic advantage of a polarizing microscope. ROTATING STAGE (4) Using the left eye, adjust the diopter adjustment collar on the eyepiece in the left-hand eyepiece tube to get the sharpest possible image. Do not use fine focus. (5) Now turn the field iris adjustment ring until the field iris is seen in the field of view. (6) Raise or lower the substage condenser so as to focus the field iris as sharply as possible in the plane of your specimen. When this is done open out the field iris until it is just outside the field of view. A ball-bearing circular stage, precisely rotatable through a full 360 degrees, is supplied as standard. Upon rotation angular measurements can be made, reading by a vernier to 0.1 degrees. Open Open CENTERING OF OBJECTIVES When the microscope is shipped to you the objectives are factory par-centered. Therefore, check and make sure that the objectives have been precisely seated on the optical axis. If it is even lightly off axis the centering is required with the Hexagon keys supplied in the following way: 7 Focused image of closed field iris 4 (7) In case the centers of field Iris and the field of view does not coincide, either the two Centering screws on Substage condenser should be loosened and fasten the other to adjust the centering, and vice versa until they coincide. SAFETY AUTO-STOP FOR OBJECTIVES AND STAGE PLATE In order to protect specimen slides and objective lenses from accidental damage, the 20X or bigger power lenses are designed to retract at the tip by built-in spring. Besides, Auto-Stopper is equipped in the microscope limb for further safety. HOW TO AUTO-STOP (1) Make sure that the Auto-Stop lever unlock. Centering screws of Substage condenser Edge of field iris deviated Perfect centering of field iris and field of view is loose. If not, please turn the lever counterclockwise to (2) Focus the highest power objective onto the specimen, and at the focused position, fasten the lever by turning it clockwise. Then, the stage plate can not go up over the level set by the lever. Auto-Stop lever (8) Removing one of the eyepieces, observe the disc of light coming from the back of the objective in use. Close down the Aperture iris , using the lever on the substage condenser, until only about 70%-80% of the disc of light observed remains visible. (Note that the microscope is now set up for use with the 10X objective. Similar adjustments to those mentioned above should be made when using any of the objectives required.) (9) Regarding the note above, if you choose the 100X objective, immersion oil must be applied to the specimen slide so that, when this objective is swung in and focused, both the specimen slide and the 100X objective are in good, bubble-free contact. is provided to allow the individual user to adjust the focus tension to (10) The Tension control knob his/her own preference. Tension may be increased by turning the knob with a counterclockwise motion. A lighter tension may be set by turning clockwise. Tension control 5 6 (7) In case the centers of field Iris and the field of view does not coincide, either the two Centering screws on Substage condenser should be loosened and fasten the other to adjust the centering, and vice versa until they coincide. SAFETY AUTO-STOP FOR OBJECTIVES AND STAGE PLATE In order to protect specimen slides and objective lenses from accidental damage, the 20X or bigger power lenses are designed to retract at the tip by built-in spring. Besides, Auto-Stopper is equipped in the microscope limb for further safety. HOW TO AUTO-STOP (1) Make sure that the Auto-Stop lever unlock. Centering screws of Substage condenser Edge of field iris deviated Perfect centering of field iris and field of view is loose. If not, please turn the lever counterclockwise to (2) Focus the highest power objective onto the specimen, and at the focused position, fasten the lever by turning it clockwise. Then, the stage plate can not go up over the level set by the lever. Auto-Stop lever (8) Removing one of the eyepieces, observe the disc of light coming from the back of the objective in use. Close down the Aperture iris , using the lever on the substage condenser, until only about 70%-80% of the disc of light observed remains visible. (Note that the microscope is now set up for use with the 10X objective. Similar adjustments to those mentioned above should be made when using any of the objectives required.) (9) Regarding the note above, if you choose the 100X objective, immersion oil must be applied to the specimen slide so that, when this objective is swung in and focused, both the specimen slide and the 100X objective are in good, bubble-free contact. is provided to allow the individual user to adjust the focus tension to (10) The Tension control knob his/her own preference. Tension may be increased by turning the knob with a counterclockwise motion. A lighter tension may be set by turning clockwise. Tension control 5 6 SPECIAL POLARIZING FACILITIES Please note that the applications and detailed techniques of polarizing microscopy are beyond the scope of this manual. What follows is a description of the special features of the ML9000 Series Polarizing Microscope which are often used in geological, mineralogical, chemical and other optical studies which have long been associated with the polarizing microscope. SUBSTAGE POLARIZER After you have focused on the specimen proceed as follows:(1) Move the sliders on which the two binocular eyepiece tubes are mounted in and out until the distance between them is exactly the same as the distance between the pupils of the observers eyes. (This is the interpupillary distance .) (2) When this is done note the dimension which is displayed in the Window of the slider. Always remember to set to this distance when using the microscope. It will be different for different observers, so they will have to check the best setting for themselves. This is fully rotatable with a swing-out, click-in mount. When the polarizer is swung out, the light is not polarized. Window When it is swung into the path and clicked into its correct position, the polarizer may be rotated, sending polarized light within angles from 0-360 degrees up to the specimens. Angular settings for 0 degrees and 90 degrees are marked and clicked on the mounting so that these common settings can be located quickly and precisely. Substage Polarizer (The picture shows that substage polarizer is swung out.) (3) Now use the fine focus to get a sharp image in the right-side eyepiece using your right eye. SLIDE-IN ANALYZER This is mounted in an in-tube slider which moves the analyzer in and out of the optical path. When in , and with the substage polarizer also in and set at 0 degrees, these elements are said to be crossed and the field of view is said to be extinguished . In this condition the field of view is dark except for optically active elements in the field, which rotate the angle of polarization and thus become visible against a dark background. This is the basic advantage of a polarizing microscope. ROTATING STAGE (4) Using the left eye, adjust the diopter adjustment collar on the eyepiece in the left-hand eyepiece tube to get the sharpest possible image. Do not use fine focus. (5) Now turn the field iris adjustment ring until the field iris is seen in the field of view. (6) Raise or lower the substage condenser so as to focus the field iris as sharply as possible in the plane of your specimen. When this is done open out the field iris until it is just outside the field of view. A ball-bearing circular stage, precisely rotatable through a full 360 degrees, is supplied as standard. Upon rotation angular measurements can be made, reading by a vernier to 0.1 degrees. Open Open CENTERING OF OBJECTIVES When the microscope is shipped to you the objectives are factory par-centered. Therefore, check and make sure that the objectives have been precisely seated on the optical axis. If it is even lightly off axis the centering is required with the Hexagon keys supplied in the following way: 7 Focused image of closed field iris 4 OPERATING INSTRUCTIONS The centering can be carried out with the Hexagon keys OPTICAL SET-UP AND ILLUMINATION (1) Turn on the illuminator. Place the specimen slide you wish to examine on the microscope stage and rotate the 10X objective into position for focus. (2) Move the substage condenser up to its top position, using the Rack and pinion focusing control Check to make sure that both the Field iris and the Aperture iris are fully open. . supplied in the following way: (1) Focus down on your specimen through the 10X objective mounted in the non-centerable locked-up opening, aside from the other floating centerable nosepiece holes, and memorize the point of the specimen appearing just on the eyepiece cross-line center. (2) Turn the nosepiece and bring the next higher power objective to the position, and focus on the specimen if necessary, and see whether the pinpoint of the specimen you memorized before is located just at the cross point of the mark. (3) In case the memorized pinpoint is seen away from the cross point, it must be brought to the cross point by the use of the provided two Centering Screws, which can be inserted into the key holes on the nosepiece ring and turned to move the pinpoint to the cross point. Rack and pinion focusing control for substage condenser Aperture iris control lever Hexagon keys Switch and intensity control knob Field iris control Hexagon keys (3) Focus down on your specimen slide until detail can be seen. Adjust the brightness of the in-base light source, using the Intensity control knob , left-hand back on the base. BINOCULAR ADJUSTMENT COMMENT: Using a binocular body is much more efficient and less tiring than monocular bodies, but it must be adjusted correctly. When it is perfectly adjusted the images coming from the two eyepieces are fused into one better image in eyes of the observer. Fused This picture shows that the Hexagon key inserted into the key hole on the nosepiece. NOTE: It is important that you change magnifications by rotating the milled nosepiece ring, not by grasping and pulling the objective barrels. Doing this puts strain on the objective housings which can cause some decentering. BERTRAND LENS The ML9000 series polarizing microscope features an in-tube, slide-in Bertrand Lens. Fitted with it is a field-limiting aperture which allows isolation of small features in the center of the field. Thus the characteristic interference figures for small crystalline elements can be observed and studies. These effects only occur when both analyzer and polarizer are in the optical path, the polarizer being set at 0 degrees. The in-tube design of the Bertrand Lens makes it possible to use it equally well with binocular, trinocular and monocular bodies. COMPENSATORS A sensitive tint plate (first order red) and mica 1/4 wave plate are supplied with the ML9000 series polarizing microscope as standard. These are fitted in plates with standard DIN dimensions, sliding in a slot cut in the tube just above the objective nosepiece. 3 8 PHOTOGRAPHY AND TELEVISION UNPACKING, ASSEMBLY, PREPARATION FOR USE PHOTOGRAPHY UNPACKING Photographic documentation of microscope visual images is most conveniently achieved by using the trinocular (photo-binocular) bodies for use with 35mm SLR Camera or PMX100 Large Format Camera. All MEIJI TECHNO microscopes are usually supplied in an expanded polystyrene, 2-part case and this should be used for storage, possible transport in the future, etc. If your order includes a wooden storage cabinet, release the fixing screws holding the limb and base from the cabinet and withdraw. In the case of the ML series of biological, metallurgical and polarizing microscopes a trinocular body is equipped with a sliding switch-over beam-splitter component which either (1) allows all of the light to go to the visual eyepieces or (2) directs 80% of the image-forming light upwards to the film plane of a 35mm SLR camera, while still sending 20% of the light to the binocular eyepieces. In the system the MA150/50 or MA150/60 Camera Attachment should be used with the SLR camera of your choice. Please note that one of the large range of T2 Adapter Rings suiting to your camera should be ordered separately. These adaptor rings are intended to compensate for the small differences in effective distance of the film plane in your camera - so as to ensure that photographs are optimally sharp, and achieved without wastage of film in trial shots and experimentation. Unpack the microscope and its parts carefully. Do not throw away any boxes or packing materials until the contents of the shipping container have been checked against your order and the packing list sent. ASSEMBLY The binocular or trinocular body which is stored separately should now be mounted on the limb and clamped, when it is squared with the base. It is important that the body be oriented correctly on the microscope limb. Make sure, therefore, that the point of the Clamp screw gets fit to the Slot milled on the bottom face of the body. In addition special low-power camera eyepieces (2.5X, 3.3X and 5X) are available and recommended these will give you maximum field coverage on your specimen while using the convenient and economical 35mm film format. Slot CAMERA OPERATION (1) Fix your 35mm SLR camera, T2 Adapter and a photo (camera) eyepiece on the MA150/50 or MA150/60 Camera Attachment, then mounting this assembly on the straight tube of the trinocular body. Cone fitting [Adverse side of body] (2) Pull out the lever on your trinocular body so as to send the image both to the camera and the visual eyepieces. To mount the body, loosen the Clamp screw and insert the Cone fitting in the top of the limb and clamp it by the clamp screw. (3) Rotate the adjustment ring on the straight tube so as to set correctly for optimum conditions of simultaneous visual observation and photography. Place the microscope and parts on a sturdy table or desk which gives firm and stable support. This should be located where the atmosphere is as clean as possible, avoiding the places where there is excessive dust, moisture, heat or fumes. TELEVISION For television the MA151/10 C Mount should be used, threaded into your TV camera, then placed and adjusted on straight tube of your trinocular body. Adjustment can then proceed as per paragraph (3) above. You should understand that the comparatively large magnification factors inherent in most TV camera/monitor systems will restrict your field of view (while blowing up total magnification). A correct optical set-up and adjustment is, of course, crucial to obtaining a good TV monitor image, but keep in mind that the monitor controls for brightness and contrast adjustment are also important and should also be experimented with in order to obtain the best monitor image. 9 Clamp screw of the body into the recess When in place insert eyepieces in the eyetubes of the binocular body and mount the objectives on the centering objective nosepiece, starting with the lowest magnification, but positioning the 10X in the fixed (not centerable) opening. Then position the others to the right in order of increasing magnification. A focusable cross-line eyepiece should be used in the slotted eyetube. Make sure that it is Keyed into the slot in the eyetube, as its orientation is important and should not change. The cross-line should be sharply focused by turning the focusing ring. IMPORTANT! Before plugging the illuminator into any electric outlet, make sure that transformers and illumination bases supplied to you are suitable to the current available. (See voltage indication at the bottom of limb.) 2 10X Eyepiece, High-eyepoint, Widefield Focusing Cross-line Eyepiece, 10X MAINTENANCE AND CARE Photo Tube BULB REPLACEMENT MODEL 9300: Trinocular Body MODEL 9200: Binocular Body MODEL 9100: Monocular Body Rotatable 360ﾟ/30ﾟ Inclination Beam-splitter Lever Analyzer Slider Bertrand Lens/Aperture Ball-bearing Objective Nosepiece with Objective Mounts Compensator Slot Strain Free Objectives Microscope Limb When changing light bulbs in the illuminators, always disconnect the plug from the electrical source, and make it sure that the green monitor light is off. Never work on the electrical system without first disconnecting. The bulb is held in a socket block inserted in the rear of the microscope base. (1) Remove the socket block from the microscope base by unscrewing the two screws and pulling the backing plate clear of the instrument. (2) After making certain the old bulb is cool to the touch, remove it by pulling straight out of its socket. Do not twist as the lamp pins may break off and become lodged in the socket. (3) Handle the new bulb only with tissue paper or the plastic in which it is wrapped and insert the two pins into the two holes in the socket. DO NOT HANDLE WITH BARE FINGERS - BULB MAY EXPLODE WHEN HEATED IF NOT HANDLED CORRECTLY. Rotatable Stage with Clamp, Reading to 1ﾟ Rotation Tension Control Knob Substage Condenser Achromatic N.A.1.25 Coarse Focus Knob Light Intensity Control Knob Fine Focus Knob Rotatable Swing-out Polarizer Substage Focus Control CLEANING Field Iris Adjustment Ring Clean exposed lens surfaces carefully with a pressurized air source, soft brush or clean soft cloth. Too much finger pressure may damage lens coatings. CARE Always cover the instrument with plastic dust cover provided when the microscope is not in use. Keep eyepieces in the microscope body at all times in order to prevent dust from falling on the internal optics. Store the microscope in a safe, clean place when not in use for an extended period of time. Koehler Type Illuminator with 6V 30W Halogen Lamp To remove oil, fingerprints and grease smudges, moisten the cleaning cloth with a very small amount of alcohol or xylene. Immersion oil should always be promptly cleaned from high power oil immersion objectives after every use. Microscope Base with Built-in Transformer Painted or plastic surfaces should be cleaned only with a cloth moistened with water and a small amount of detergent. MODEL ML9300 [TRINOCULAR MODEL] 1 First Order Red Compensating Plate 1/4 Wave-Length Test Plate DO NOT ATTEMPT TO MAKE ADJUSTMENTS TO THE INTERNAL OPTICS OR MECHANICS!! If the microscope does not seem to be functioning properly or you have questions about its operation, call your supplier (or an authorized repair service) for advice. 10